<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <button id="connect">连接</button>
    <button id="send" disabled="true">发送数据</button><br />
    从服务端接收的数据如下：<br>
    <span id="recv"></span>
    <script>
        var connect = document.querySelector('#connect')
        var send = document.querySelector('#send')
        var recv = document.querySelector('#recv')
        let ws = null
        connect.onclick = function () {
            ws = new WebSocket('ws://localhost:9998')
            ws.onopen = () => {
                console.log('连接服务端成功咯 起飞！！！');
                send.disabled = false
            }
            ws.onclose = () => {
                console.log('没事 失败了 没关系的');
                send.disabled = true
            }
            ws.onmessage = (msg) => {
                console.log('接收到从服务端发来的数据了:');
                console.log(msg);
                recv.innerHTML = msg.data
            }
            send.onclick = function () {
                ws.send(JSON.stringify({
                    action: 'themeChange',
                    socketType: 'themeChange',
                    chartName: '',
                    value: 'chalk'
                }))
            }


        }
        send.onclick = function () {

        }
    </script>
</body>

</html>